#include<iostream>
#include<vector>
using namespace std;
string s;
vector<char> a;
void f(){
	for(int i=0;i<s.length();i++){
		if(s[i]=='a'||s[i]=='e'||s[i]=='i'||s[i]=='o'||s[i]=='u'){
			a.push_back(s[i]);
		}
	}
}
int main(){
	cin >> s;
	f();
	for(int i=0;i<a.size();i++){
		printf("%c",a[i]);
	}
	return 0;
}
